Abstract
In recent years the Italian Aerospace Research Center has carried out several research projects with the objective of developing innovative technologies in support of aerospace applications. Particular attention has been given to the development of an advanced air data system architecture based on the concept of Virtual Air Data. Virtual air data are virtual quantities based on the combination of inertial measurements with weather forecast data coming from a meteorological model. This model can be considered as a virtual sensor that provides information on wind velocities, air temperature and air pressure. A sensor fusion algorithm is then used to determine an estimate of the true air speed components. In this perspective, virtual air data act as a fault-tolerant solution in the event of an air data system failure. Past flight tests of the Italian Unmanned Space Vehicle have already demonstrated the validity of this kind of approach for guidance, navigation and control purposes. The work presented in this paper aims at demonstrating the applicability of this approach also to an aeronautical scenario (general or commercial aviation), mainly as a safety back-up in case of malfunctions of pitot tubes and static ports that can also lead to erroneous flight instrument information that may have serious consequences if not recognized by pilots.
Published Version
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